Are there any more besides the one's you've posted on this thread?
Would it be possible to take the scenes that you've made and arrange them such that you can press the arrow keys to move to the next scene in the same sequence as you would in KQ1? That would be the first step in making a mini-game. You could probably do that without raising any flags at Activision.
The next step would be to add a parser interface where, say, the player could type, "move rock," and a message would come up, "You move the rock and see a sword underneath." Then the player could type, "take sword," and a message would come up, "You take the sword." The player could then press the tab key and "Sword" would show up in his inventory. In other words, it would have the same type of interface as the early adventure games such as the Wizard and the Princess (a.k.a. Adventure in Serenia). That would be relatively easy to do, as the scenes would all be static, but it would still look like a hi-res 3-D game. That would probably raise some flags at Activision, but if you kept quiet about it until it was finished, you might get away with it.